package grub-pc 2.02-2ubuntu8.21 failed to install/upgrade: installed grub-pc package post-installation script subprocess returned error exit status 10

[JP.Hapuoja]

Hello,

I started having many kinds of updating and upgrading problems after I tried to install Jitsi Meet to my Ubuntu.

Here are some of them (Sorry, they are in Finnish):

Tehdään asetuksia: libldap-common (2.4.45+dfsg-1ubuntu1.9) ...
Tehdään asetuksia: grub-pc (2.02-2ubuntu8.21) ...
dpkg: error processing package grub-pc (--configure):
 installed grub-pc package post-installation script subprocess returned error exit status 10
Tehdään asetuksia: libldap-2.4-2:amd64 (2.4.45+dfsg-1ubuntu1.9) ...
Tehdään asetuksia: libldap-2.4-2:i386 (2.4.45+dfsg-1ubuntu1.9) ...
Käsitellään paketin libc-bin (2.27-3ubuntu1.4) liipaisimia...
Käsitellään paketin man-db (2.8.3-2ubuntu0.1) liipaisimia...
Käsittelyssä tapahtui liian monta virhettä:
 grub-pc
E: Sub-process /usr/bin/dpkg returned an error code (1)

This what happened now, gave me this kind of announcement:

Error while installing package: installed grub-pc package post-installation script subprocess returned error exit status 10

I have Ubuntu 18.04 LTS

- JP

ProblemType: Package
DistroRelease: Ubuntu 18.04
Package: grub-pc 2.02-2ubuntu8.21
ProcVersionSignature: Ubuntu 4.15.0-135.139-generic 4.15.18
Uname: Linux 4.15.0-135-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.20.9-0ubuntu7.23
AptOrdering:
 firefox:amd64: Install
 NULL: ConfigurePending
Architecture: amd64
Date: Tue Feb 9 06:12:27 2021
DeviceMap: (hd0) /dev/sda
ErrorMessage: installed grub-pc package post-installation script subprocess returned error exit status 10
InstallationDate: Installed on 2016-08-05 (1648 days ago)
InstallationMedia: Ubuntu 16.04 LTS (Finnish Remix) "Xenial Xerus" - Release amd64 (20160420.1)
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-135-generic root=UUID=aaecf835-e695-4894-9d96-34269b67a7ad ro quiet splash vt.handoff=1
Python3Details: /usr/bin/python3.6, Python 3.6.9, unpackaged
PythonDetails: /usr/bin/python2.7, Python 2.7.17, unpackaged
RelatedPackageVersions:
 dpkg 1.19.0.5ubuntu2.3
 apt 1.6.12ubuntu0.2
SourcePackage: grub2
Title: package grub-pc 2.02-2ubuntu8.21 failed to install/upgrade: installed grub-pc package post-installation script subprocess returned error exit status 10
UpgradeStatus: No upgrade log present (probably fresh install)